/*  
 *  Copyright 2006 Paul Jack.
 *
 *  This file is part of the Dex compiler suite. 
 *  
 *  Dex is free software; you can redistribute it and/or modify it
 *  under the terms of the GNU General Public License as published by the
 *  Free Software Foundation; either version 2 of the License, or (at your
 *  option) any later version.
 *  
 *  Dex is distributed in the hope that it will be useful, but
 *  WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
 *  Public License for more details.
 *  
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */
package dex.compiler.interpreter.value;


import dex.compiler.checker.type.BooleanType;
import dex.compiler.checker.type.Type;


/**
 * The boolean values.
 */
public class BooleanValue extends Value {


	/**
	 * The true value.
	 */
	final public static BooleanValue TRUE = new BooleanValue(true);
	
	
	/**
	 * The false value.
	 */
	final public static BooleanValue FALSE = new BooleanValue(false);

	
	/**
	 * The truthiness of this boolean value.
	 */
	private boolean value;
	
	
	/**
	 * Private so that only two values exist.
	 * 
	 * @param v  the truthiness
	 */
	private BooleanValue(boolean v) {
		this.value = v;
	}

	
	/**
	 * Returns the truthiness of this boolean value.
	 * 
	 * @return  whether the value is true or false
	 */
	public boolean value() {
		return value;
	}
	
	@Override
	public String toString() {
		return Boolean.toString(value);
	}

	@Override
	public Type type() {
		return BooleanType.INSTANCE;
	}

	
	public static BooleanValue get(boolean b) {
		return b ? TRUE : FALSE;
	}
}
